Buying 10 of these Ilumini LED bulbs could save you £147.00 every year. With average use this lamp will last 17 years Fitting these Ilumini 4.5 Watt MR16 LED COB Bulbs will reduce your lighting electricity bill by up to 90% and could pay for themselves within 4 months of use. These high quality energy saving Ilumini4.5 Watt MR16 LED Bulbs are a perfect replacement for 50 Watt Halogen and are available in Warm White and Daylight and have a dimmable option.Designed for use in Domestic, Commercialand Retail areas. They have a medium beam angle. Using high quality branded LED Chips these Ilumini 4.5 Watt MR16 LED Bulbs emit 360 lumens *If you have chosen a dimmable option product in a retrofit scenario, whilst your existing dimmer may well dim the LED successfully, only the fitting of a trailing edge dimmer [see our dimmer range]will assure the longevity of the product, which we recommend. With MR16 Bulbs you will also need an LED compatible driver too[Choose a dimmable driver if you want to dim them]. See our range of drivers